Opening of Proposals - Traffic Signal central management Proj No 125-051 - Lochmueller Group

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APPROACH SIGNAL INVENTORY As an initial task, we will prepare a comprehensive signal inventory building upon South Bend's existing signal inventory. For the signal portion of the Asset Management inventory, our team can leverage lessons learned from several previous GIS inventory projects. For this project, we propose utilizing iPads with ESRI Field Map apps. This method has worked very well for us previously since the app can be preconfigured to suit the specific needs of this project. Within the Field Maps app, we can add a data dictionary and add discrete symbols for all inventoried items. Our team has extensive experience working in signal cabinets throughout the U.S. Initially, we will perform an extensive field investigation at each signal to document the existing timing plans along with all pertinent general timing inputs. Our team will also check all the crosswalk distances and approach speeds to verify the vehicle and pedestrian clearance intervals. We will document the age and general condition of each signal cabinet and verify the operation of the vehicle detection system and pedestrian push buttons. We will also investigate what type of signal interconnect is being utilized (if applicable) and verify its operation as well. Lastly, each signal will be checked for MUTCD compliance. If any deficiencies are found, they will be noted with possible corrections. SIGNALIZED INTERSECTION ADA COMPLIANCE EVALUATIONS During field inventories, each intersection quadrant will be evaluated to determine if the curb ramp facility and pedestrian push button locations adhere to best design and construction practices, as outlined in current ADA/PROWAG guidelines and the MUTCD. In general, the following aspects of the curb ramp facilities and pedestrian push button related infrastructure will be documented: + Continuous pedestrian access route (PAR) of no less than 4 ft in width is provided within the limits of the curb ramp facility + Minimum 4 ft x 4 ft level landing area (e.g., no slopes exceeding 2%) is provided adjacent to push button + Accessible Pedestrian Signal (APS) units or other non-APS push buttons with signs are present, as well as their conditions + Push button is located within a maximum 10-inch side -reach from the adjacent level landing area + Push button is located within 10 ft of the curb ramp opening + Push button is located within 5 ft Sample traffic signal asset management map (Urbana, IQ Following the collection gathered from the signalized intersections, several matrices will be created to summarize the measurements taken and check for overall compliance, when considering the aggregation of the designated categories. Each category of ADA compliance will be broken down into several different thresholds to help document the severity of various deficiencies and prioritize the order of improvements. Through close coordination with South Bend's staff, we will ensure the field data is summarized in a manner that best suits the City's needs to prioritize the improvement plans. laterally of the crosswalk it is related to + Detectable warning panels are present, 0 and if so, what their conditions are + If evident vertical discrepancies greater than 1/4 inch between sidewalk panels are present within the limits of the curb ramp facility + Photographs of each curb ramp within respective intersection quadrants ATSPMs could be utilized to offset the cost for manual measurements of stops and delays. This would also provide the City of South Bend the ability to continually evaluate the signal performance throughout the City. ATSPMs can also send alerts to City staff, which will allow the City to proactive instead of reactive in terms of signal performance with less reliance on public complaints.